There is no picture

I been trying to fix ed-x3270a hitachi projector. there is no picture on rgb input (laptop or pc) connecting. But it senses something connects. But when I connect something to video input (video camera) it works properly. This projector has 2 monitor input and there is an IC (EL 4332CS) to swich them. I connect to osiloscop IC's input and outputs there is input signal but no ouput. I decided that IC is defective. But Im not sure. any advice to fix it??
thanks

1 Answer

Just a shot in the dark. this reminds me 'bout a problem with a Optoma (or maybe it was a Ask) i fixed. In that setup menu (on the proj), i was able to adjust the sync signal on the input. (I don't mean the the screen refresh rate..) Just tried gradually step by step. Worked then!

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Related Questions:

make sure the computer has the output screen signal enabled on the external rgb connector. you can confirm this by connecting an external lcd monitor to the pc. swap the pc vga output to the projector.
then make sure the vga/rgb input source is selected on the projector.
also select the lowest resolution on the pc to start with. when a picture appears on the projector, then increase the pc screen resolution until it says it's not able to show it, and back off to the last setting that worked

Not with any RGB input options, computers are not compatible with these. The projector needs to be set up to receive VGA. There must be a toggle button or menu entry somewhere on your projector that lets you do this or why would it have a VGA input?

This could also be a setting. If you are using component video as a connection, make sure that the unit is set for RGB if coming from a laptop or other computer system. If the projector is set to YPrPb, the picture will look purple or bluish as you describe. Change the setting to RGB and all should be well.

A usb cable will not work that way--on your projector, it's used for data...you need to obtain a monitor cable which will plug into the vga connector on the laptop and into the connector on the projector (rgb in 1) or (rgb in 2) If you use the #2 rgb input, make sure the button IS NOT pushed in! If it is, the projector will be switched to OUTPUT mode on the #2 connector. Also, on the laptop, normal operation is "laptop only"...when you push the <alt F4> buttons, it should then switch to "laptop + external display(projector)", another <alt F4> push will give "external display only" mode. Then, another push will return you back to "laptop only". NOTE: Sometimes, you have to turn on the projector first, then immediately turn on the laptop--not to get technical but different equipment can get finicky about syncing up...just something to be aware of...